SELLAS LIFE SCIENCES GROUP I (SLS) is held by 87 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling SLS?

In Q1 2026, 74 institutions opened or increased positions in SELLAS LIFE SCIENCES GROUP I while 17 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on SLS?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for SELLAS LIFE SCIENCES GROUP I.

How many hedge funds hold SLS?

87 institutional investors report holding SELLAS LIFE SCIENCES GROUP I (SLS) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into SLS?

As of Q1 2026, tracked institutions in SELLAS LIFE SCIENCES GROUP I show 74 buyers versus 17 sellers — net inflows.

SELLAS LIFE SCIENCES GROUP I

SLS·81642T209·US·Common Stock·Healthcare - Biotechnology-13D/G

Holders

Avg rating(24 Elite)

$213.1M

Total Value

81% (94)

Fund Consensus

74 buying - 17 selling

Smart Money Verdict

View all

Held by 87 funds

24 elite

Who's Trading

Activist

BlackRock, Inc.6.8%Apr 24, 2026

Activist

The Vanguard Group0.0%Mar 27, 2026

ActivistANAnson Funds Management LP4.9%Feb 17, 2026

ActivistHIHighbridge Capital Management, LLC3.7%Jan 30, 2026

InsiderKBKalin Katherine BachBuy $101KNov 19, 2025

InsiderVLVAN NOSTRAND ROBERT LBuy $15KJun 12, 2025

InsiderWJWasman JaneBuy $34KMay 30, 2025

InsiderKBKalin Katherine BachBuy $36KMay 22, 2025

View all insider trades View all activist filings

13F: Mar 31, 2026Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	12.2M(+61.8%)	$51.6M	0.0%	+279.41%	42
STATE STREET CORP	Increased	8.4M(+283.7%)	$35.5M	0.0%	+181.75%	47
VAVANGUARD CAPITAL MANAGEMENT LLC	New	7.5M	$31.8M	0.0%	+140.30%	40
GEODE CAPITAL MANAGEMENT, LLC	Increased	3.9M(+27.1%)	$16.6M	0.0%	+315.04%	35
MWMARSHALL WACE, LLP	Increased	2M(+52.0%)	$8.6M	0.0%	+312.09%	38
JONES FINANCIAL COMPANIES LLLP	Increased	1.7M(+290.2%)	$7.3M	0.0%	+166.00%	44
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	1.5M	$6.2M	0.0%	+140.30%	38
MORGAN STANLEY	Increased	1.3M(+50.0%)	$5.7M	0.0%	+320.18%	37
NORTHERN TRUST CORP	Increased	1.3M(+37.1%)	$5.4M	0.0%	+316.44%	35
VFVANGUARD FIDUCIARY TRUST CO	New	1.2M	$5.1M	0.0%	+140.30%	37
UBS Group AG	Increased	745,419(+1429.8%)	$3.2M	0.0%	+151.29%	43
Invesco Ltd.	Increased	698,080(+1209.9%)	$3M	0.0%	+152.20%	43
Nuveen, LLC	Decreased	670,974(-34.5%)	$2.8M	0.0%	+546.24%	0
BANK OF AMERICA CORP /DE/	Increased	641,683(+535.7%)	$2.7M	0.0%	+160.38%	42
GOLDMAN SACHS GROUP INC	Increased	555,913(+35.0%)	$2.4M	0.0%	+237.40%	34
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	480,604(+17.7%)	$2M	0.0%	+358.45%	30
Bank of New York Mellon Corp	Increased	478,366(+86.6%)	$2M	0.0%	+249.61%	40
TWO SIGMA INVESTMENTS, LP	Decreased	403,165(-62.8%)	$1.7M	0.0%	+311.75%	0
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	397,056(+13.5%)	$1.7M	0.0%	+535.39%	29
WELLINGTON MANAGEMENT GROUP LLP	New	344,778	$1.5M	0.0%	+140.30%	35